###############################################################################
# Makefile for the project wems
###############################################################################

## General Flags
PROJECT = wems
MCU = atmega644p
TARGET = wems.elf
CC = avr-gcc

## Options common to compile, link and assembly rules
COMMON = -mmcu=$(MCU)

## Compile options common for all C compilation units.
CFLAGS = $(COMMON)
CFLAGS += -Wall -gdwarf-2 -std=gnu99        -DF_CPU=8000000UL -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d 

## Assembly specific flags
ASMFLAGS = $(COMMON)
ASMFLAGS += $(CFLAGS)
ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2

## Linker flags
LDFLAGS = $(COMMON)
LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm -Wl,-Map=wems.map


## Intel Hex file production flags
HEX_FLASH_FLAGS = -R .eeprom -R .fuse -R .lock -R .signature

HEX_EEPROM_FLAGS = -j .eeprom
HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"
HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0 --no-change-warnings


## Objects that must be built in order to link
OBJECTS = wems.o cmd.o config.o elm.o event.o lcd.o mode.o mode_config.o mode_elm.o mode_log.o nvm.o obd_pid.o spi.o ui.o usart.o util.o elm_dtc.o 

## Objects explicitly added by the user
LINKONLYOBJECTS = 

## Build
all: $(TARGET) wems.hex wems.eep wems.lss size

## Compile
wems.o: ../wems.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

cmd.o: ../../cmd.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

config.o: ../../config.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

elm.o: ../../elm.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

event.o: ../../event.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

lcd.o: ../../lcd.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

mode.o: ../../mode.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

mode_config.o: ../../mode_config.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

mode_elm.o: ../../mode_elm.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

mode_log.o: ../../mode_log.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

nvm.o: ../../nvm.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

obd_pid.o: ../../obd_pid.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

spi.o: ../../spi.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

ui.o: ../../ui.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

usart.o: ../../usart.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

util.o: ../../util.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

elm_dtc.o: ../../elm_dtc.c
	$(CC) $(INCLUDES) $(CFLAGS) -c  $<

##Link
$(TARGET): $(OBJECTS)
	 $(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET)

%.hex: $(TARGET)
	avr-objcopy -O ihex $(HEX_FLASH_FLAGS)  $< $@

%.eep: $(TARGET)
	-avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0

%.lss: $(TARGET)
	avr-objdump -h -S $< > $@

size: ${TARGET}
	@echo
	@avr-size -C --mcu=${MCU} ${TARGET}

## Clean target
.PHONY: clean
clean:
	-rm -rf $(OBJECTS) wems.elf dep/* wems.hex wems.eep wems.lss wems.map


## Other dependencies
-include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*)

